diff --git a/src/kstyle/CMakeLists.txt b/src/kstyle/CMakeLists.txt
--- a/src/kstyle/CMakeLists.txt
+++ b/src/kstyle/CMakeLists.txt
@@ -1,8 +1,6 @@
 # create a Config.cmake and a ConfigVersion.cmake file and install them
 set(CMAKECONFIG_INSTALL_DIR "${KDE_INSTALL_CMAKEPACKAGEDIR}/KF5Style")
 
-configure_file(config-kstyle.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-kstyle.h )
-
 remove_definitions(-DQT_NO_CAST_FROM_ASCII)
 
 add_library(KF5Style kstyle.cpp)
diff --git a/src/kstyle/config-kstyle.h.cmake b/src/kstyle/config-kstyle.h.cmake
deleted file mode 100644
--- a/src/kstyle/config-kstyle.h.cmake
+++ /dev/null
@@ -1 +0,0 @@
-#cmakedefine01 HAVE_X11
diff --git a/src/kstyle/kstyle.cpp b/src/kstyle/kstyle.cpp
--- a/src/kstyle/kstyle.cpp
+++ b/src/kstyle/kstyle.cpp
@@ -58,11 +58,6 @@
 #include <kconfiggroup.h>
 #include <kiconloader.h>
 #include <kcolorscheme.h>
-#include <config-kstyle.h>
-#if HAVE_X11
-#include <QX11Info>
-#include <xcb/xcb.h>
-#endif
 
 // ----------------------------------------------------------------------------